The phrase "a group of influential" is correct and usable in written English.
It can be used to refer to a collection of people who have significant power or impact in a particular context, such as politics, business, or social issues.
Example: "The conference was attended by a group of influential leaders who discussed the future of renewable energy."
Alternatives: "a circle of powerful" or "a cohort of prominent".
My attorney invited me to go to Denver one weekend about a year ago because there was going to be a group of influential businessmen that he represented getting together.
The first builds on the "universal museum" principle, outlined by a group of influential directors, in 2004.
He met privately for an hour with a group of influential black pastors, then with students from Florida A&M.
We've curated a group of influential voices on Twitter to keep you updated on the evolving needs of the 2.5bn people who currently cannot access financial services.
The commission has heard that a group of influential parishioners wrote to the royal commission questioning the timing of Thompson's abuse claims.
The idea was to engage a group of influential employees in the topic of internet safety, which is a material issue for any internet service provider.
But, just before Christmas, a group of influential clerics called the Somali Religious Council released a statement calling basketball "un-Islamic" and a "threat to their faith".
Fifty years ago, during the heyday of the B.S.C., a group of influential environmentalists persuaded people all over the world that species preservation was of paramount importance.
Even so, without naming names, the disclosed expenses highlighted a widely used industry strategy of focusing much of the marketing money on a group of influential doctors.
A group of influential figures in college athletics, including three prominent basketball coaches, have formed the College Basketball Partnership, which will work toward improving the sport.
A group of influential MPs warned there would be a fivefold increase in customs checks at Dover and other ports from 60m a year to 300m after Brexit.
